diff --git a/drivers/staging/sm750fb/ddk750_chip.c b/drivers/staging/sm750fb/ddk750_chip.c
index 93abfa8b0090..cd2ca0de1ae9 100644
--- a/drivers/staging/sm750fb/ddk750_chip.c
+++ b/drivers/staging/sm750fb/ddk750_chip.c
@@ -45,7 +45,7 @@ static unsigned int get_mxclk_freq(void)
 	OD = (pll_reg & PLL_CTRL_OD_MASK) >> PLL_CTRL_OD_SHIFT;
 	POD = (pll_reg & PLL_CTRL_POD_MASK) >> PLL_CTRL_POD_SHIFT;
 
-	return DEFAULT_INPUT_CLOCK * M / N / (1 << OD) / (1 << POD);
+	return DEFAULT_INPUT_CLOCK * M / N / BIT(OD) / BIT(POD);
 }
 
 /*